docs(toast): update

docs/app/components/content/examples/toast/ToastAvatarExample.vue

@@ -0,0 +1,21 @@
+<script setup lang="ts">
+import type { AvatarProps } from '@nuxt/ui'
+
+const props = defineProps<{
+  avatar: AvatarProps
+}>()
+
+const toast = useToast()
+
+function showToast() {
+  toast.add({
+    title: 'User invited',
+    description: 'benjamincanac was invited to the team.',
+    avatar: props.avatar
+  })
+}
+</script>
+
+<template>
+  <UButton label="Invite user" color="gray" variant="outline" @click="showToast" />
+</template>